Hi,

We're revisiting in MediaWiki 1.27 our semantic web support.

The RDFa 1.0 and microdata tags will be always available, without the need to set an option. See https://phabricator.wikimedia.org/rMWe789f51f1183d57999926b80c726338d8611e2f...

Furthermore, we would like to support RDFa 1.1. See https://www.mediawiki.org/wiki/Requests_for_comment/Update_our_code_to_use_R...

This change could break your current RDFa 1.0 use. The RFC highlights the main change. The full list is available at https://www.w3.org/TR/rdfa-core/#major-differences-with-rdfa-syntax-1.0

We have a question for people who are running wikis with the MediaWiki software. Do someone here use RDFa 1.0? If so, do you plan a migration to RDFa 1.1 or could we help you to?

Depending on your feedback, we'll be inclined to offer a compatibility path or to directly update to RDFa 1.1, and drop RDFa 1.0 support.